Hi all, sorry- tried reading the whole forum, but it will take a few months..
I have a LCR-TC2 with a Mega324PA cpu, on a T7-plus V1.1 board, 6 pin connector to 160x128 display subboard.
Originally was showing v3.1E firmware, but had a very bad(although consistent) accuracy on certain resistor values only, and very low reading on zeners below 10V(showing less than 1V). Input ports were not blown- confirmed it by measuring equal resistance of few hundred kOhm to Vcc and Gnd.
Soldered headers for main cpu, and U3(in my case), tried a few pre-compiled firmware(.hex and .eep) files without success. Best I can get is startup, quick measurement, and then almost immediate off(with v1.34m).
Is there any alternative firmware for the U3 chip? It gets recognized by STC-ISP as STC15L104W, but the only firmware I have is tc1_u4_v0.3.1.hex(which flashes without error). Or is it the main program that's not right?
If I need to compile from a source file, why are there no mega324 subfolders inside the trunk folders of both developers?
Sorry about the noob questions, but have been battling for few days.